Solve for the missing variable

What is the first step you check to do when solving for an equation?

• Check to distribute

• Check to combine like terms

• Check to do inverse operations

• Check to see if any numbers are even or odd

Tags

CCSS.HSA.REI.A.1

What is the last step you do when solving for an equation?

• Check to distribute

• Check for inverse operations

• Check to combine like terms

• Add and subtract your numbers

Tags

CCSS.HSA.REI.A.1

• Combine like terms

• Distribute

• Inverse operations

• Add the 4x and 2

Tags

CCSS.HSA.REI.A.1

A student is solving for an equation and is stuck on his last step. What should he do and what is the answer?

His work:

Step 1: 2(2x+2)=4x+16x

Step 2: 4x+4=4x+16x

Step 3: 4x+4=20x

Step 4: 4=16x

Step 5: ????????

• Inverse operations by dividing both sides by 16. You get 4

• Combine like terms by combining 4 and 16x. You get 20

Tags

CCSS.8.EE.C.7B

Solve for the variable

4x-4=12+2x

• x=4

• x=6

• x=8

• x=10

Solve for this equation

10(5x+4)=10x+20x

• x=20

• x=-20

• x=2

• x=-2

Tags

CCSS.8.EE.C.7B